Vapor-burner.



No. s7a,295.- v L. DURR.

VAPOR BURNER.

(Application filed July 2 2, 1899.)

(no Model.) 2 Sheets-Sheet I.

Patented July 9, I901.

L. ni'mn.

VAPOR BURNER.

(No Model.)

(Application filed July 22, 1899.)

Patented July 9,1901.

2 Sheets-Sheet 2.

4 a, :M v 4 L UDWIG DURR, on BREMEN, -ennui-WY.

VAPOR-BURNER.

SPECIFICATION forming part of Letters Patent No. 678,295, dated July 9, 1901.

Application filed July 22,1899. Serial No. 724,780. (No model.)

To all whom it may concern:

Be it known that I, LUDWIG DI'ITRR, civil engineer, of Baumstrasse 51, Bremen, Germany, have invented certain new and useful Improvement-s in Vapor-Burners, of which the following is a specification.

My invention relates to an apparatus for firing boilers by petroleum which produces no smoke whatever and in which this liquid fuel is injected in the boiler-furnace in the form of vapor in contradistinction to what takes place in other systems of liquid-fuel burning in which the liquid is atomized on its being injected into the furnace.

My apparatus is based on the use of two vaporized-oil burners located one behind'the other and acting simultaneously. This arrangement cannot in its usual form be used for heating boilers, for the production of coke residuums soon causes stoppages of the burners, a disadvantage which cannot be remedied when the boilers are continuously at work. This disadvantage, as well as the necessity of taking into account the conditions under which the boilers are working, has led me to devise the arrangement shown on the accompanying drawings, in which Figure 1 is a longitudinal section, and Fig. 2 an end view.

My apparatus consists of two cylindrical vaporizers located one behind the other, but independent of each other. The first of these Vaporizers (preferably the smaller one) feeds the burner that is used for vaporizing and superheating the petroleum contained in the Vaporizers, while the second (the larger one) supplies vapor to the heating-burner proper.

' The two cylindrical bodies forming the vaporizers are made of suitable cast metal, and their internal capacities are determined so as to be in the required ratio. The smaller vaporizer ais in the middle of its height connected with the head of the burner c by a pipe I), of large diameter. A valve (1, fitted with a regulating conical plug in. front of the opening e of the burner, serves to keep this opening clear and to regulate the outlet area, and consequently the current of hot gases. To facilitate the cleaning of this burner it is fitted with screws f f. The larger vaporizer g is made of elongated form and is placed in an upright position. The pipe that feeds the main burner h projects laterally from the vaporizer at a considerable distance above its bottom. This burner 7t is placed in the center of the furnace and heats the boiler. All sectional areas are of such size that a stoppage cannot take place. The feeding of the two Vaporizers is effected by means of pipes '11 41', to which they are connected at their upper part. Thisfeeding is effected under pressure and may be accurately regulated by means of regulating-valves in the feed-pipes and of injecting-nozzles located in the rear.

The Vaporizers and burners are arranged in a cylindrical firing-chamber 7c, the wall of which consists of several parts. The main vaporizer g rests on the bottom of the cylindrical chamber and the smaller burner on a cross-bearer Z in the front part of the chamber 7s. The latter is mounted inside a casing m, attached to the front of the boiler, the said cylindrical chamber being supported inside the casing by means of suitable stays, (he. The rear opening of the chamber can be closed by means of dampersnu, Fig. 2. The annular space 0 between the chamber 70 and the outer casing, which serves to supply air to burner h, may be provided with louvers or slides for the purpose of regulating the supply of air. An opening 19 in bottom of chamber 76 supplies to burner o the air required for the combustion.

The working of this apparatus is as follows: The valves 17, in rear of the burners are opened and the Vaporizers a and g, as wellas the head of burner c, are heated from outside, which is eifected in a simple and rapid manner by means of the flame issuing from aspe cial oil-burner. When the Vaporizers are sufficiently hot, the petroleum-supply to vaporizer a is first of all opened. The oil-vapor which issues from burner c ignites and con-' tinues to heat the two Vaporizers which are struck by the flame, which goes on increas ing. The lower part of the larger vaporizer is completely enveloped by the flame, which insures the rapid and complete vaporizing of quantities of petroleum as large as required. The pipes which supply the vaporized oil to the burners are situated sufficiently high above the bottom of the Vaporizers to permit the coke residuums to settle on the bottom and prevent them stopping the large sections of the feed-pipes to the burners. By this means I avoid, once for all, the stoppages which might otherwise occur when working with boilers fitted with petroleum-burning appliances. As the connections and joints of my petroleum-burning apparatus are outside the space in which the firing is effected, it is impossible for these parts to stick fast under the action of the fire, so that it becomes impossible to take them apart again. On the contrary, the opening and inspection of the Vaporizers are always easy operations.

I reserve the right to make in the vaporizers and burners and their arrangement as shown in the accompanying drawings any modification or modifications which will not alter in any way their mode of working.

Having thus described my invention, what I claim, and desire to secure by Letters Patout, is-

1. A vapor-burner composed of two independent Vaporizers, of which the front vaporizer projects beyond the rear vaporizer, combined with a vaporizing-burner connected to one of the Vaporizers and adapted to heat both of the Vaporizers, and a heating-burner to the front vaporizer at a distance from its bottom to prevent any coke from being carried to said burner, substantially as specified.

3. A vapor-burnercomposed of a pair of independent vaporizers, a rear vaporizingburner connected to one of the Vaporizers and adapted to heat both of said Vaporizers, a front heating-burner connected to the other vaporizer at a distance from its bottom, a

chamber that incloses the Vaporizers, a surrounding casing, and dampers at the rear of said chamber, substantially as specified.

In Witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

LUD IVIG DURR.

I \Vitnesses:

MAX MUssER, C. GLEGDIN. 

